Folder functionality

First, you guys/gals are great and have ruined me over the years with being the best task manager out there but the issue with folders keeps having me try (spend money) on other products which in turn fail me and I eventually come back.

Could we have tags on folders? This way I can have searches for folders related to work, or active projects, or have several folders related to a REALLY big, multi step project.

Or to be able to search in a folder name, I can have WORK or PERSONAL in the name so I can search that.